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Questions tagged [amazon-elb]

ELB is Amazon's managed Load Balancer service, used in conjunction with its EC2 virtual machine cloud hosting service.

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server stops sending SYN ACK after several normal connections

I have a few thousand devices behind a NAT talking to two servers. Each device is behind a local router (think modem/router), at which they get NATed to a private network that has thousands of these devices, and at the gateway for this private…
user278837
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AWS ELB with HAProxy setup

We want to use a single ELB to handle the AWS free SSL/TLS certificate with wild card. For example we have n servers app1.example.com app2.example.com ... appn.example.com Each app has its own server or collection of servers. We want to use…
Jeancarlo
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What are reasons to name (or not name) ElasticLoadBalancer resources in AWS CloudFormation?

The AWS CloudFormation (CFN) documentation allows naming of ElasticLoadBalancers (ELB). If I name an ELB, the following restrictions apply: Important If you specify a name, you cannot do updates that require this resource to be replaced. You can…
M. Glatki
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Why isn't SSL working on my AWS ELB?

I'm trying to set up my SSL certificate for my site. However my site responds with this site can't be reached in Chrome. In the certificate manager, it shows my cert's associated resource is my ELB. The ELB is setup for HTTPS, port 443. Its target…
Matt Gershowitz
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Redirect loop - AWS ELB SSL Nginx

We have certificate installed on ELB provided by AWS certificate services, also a self signed certificate is configured on Nginx web server. Now, when user comes to https://www.example.org/ it says www.example.org redirected you too many times.…
Farmi
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Is there a limit on AWS ELB?

I'm running an OpsWorks stack with: 10 c3.2xlarge instances running across 4 availability zones. The CPU never surpasses 5% on each instance. Each instance is connecting (through a memcached layer) to a db.r3.8xlarge (32 vCPU, 244 GiB RAM) RDS…
Nick Gotch
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ELB Health check passes. Scaling Group Shows unhealthy. With scaling group set to the ELB check

Having an issue where our ELB health checks are showing up as healthy on the ELB page. but checking on the Scaling group instances page its showing as unhealthy. causing the autoscaler to kill it without any need. Despite the Box a) being fine.…
Fusspawn
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ELB, Nginx and redirecting http to https - 408 requests timeout

I have this configuration: The Amazon Elastic Load Balancer (ELB) routes port 80 to port 81 and port 443 to port 80 The cert is handled in ELB Nginx listens to port 80 and 81 Port 81 redirects to https Port 80 is the main server The nginx…
ic3b3rg
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Nginx DNS resolution for PHP Load Balancer

Our AWS configuration has an nginx server pointing all PHP requests to an ELB with multiple PHP servers in it. When the ELB itself scales, we lose connectivity within the next few hours as those old IPs are recycled. A restart of the nginx servers…
ahamilton9
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WebSockets with TeamCity behind Amazon ELB

I'm setting up TeamCity behind a public ELB in Amazon. I am attempting to fix the WebSocket connection issue: Some users cannot use optimized web UI updates via WebSocket protocol. This is a standard, default install of TeamCity listening on port…
Thomas Farvour
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RabbitMQ cluster restarts every 30 minutes

I have a two node RabbitMQ 3.6.1 cluster (on CentOS 6.8 in AWS) that seems to restart regularly every 30 minutes. I just traced through the logs (/var/log/rabbitmq/rabbit@.log) on both machines to get a timeline of what happens. I've…
Devin
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Does nginx stop sending traffic to unresponsive php servers?

We are running a website on AWS with a specific setup: An ELB splits the load onto 2 x t2.medium instances running nginx. From there the PHP traffic is split into 2 (frontend and API) streams, both to internal ELBs fronting our PHP servers. For the…
Alex
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Loadbalancing SFTP with TCP connection timed out

I have a sftp process running on a machine on Amazon EC2. Connecting with Filezilla works flawlessly. I tried to create an Amazon load balancer over TCP:TCP for this process, internet facing, but I can only get Connecting to…
Heschoon
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Trouble enabling Proxy Protocol on AWS ELB

I followed the guide at http://docs.aws.amazon.com/ElasticLoadBalancing/latest/DeveloperGuide/enable-proxy-protocol.html to enable the Proxy Protocol on both my TCP listeners (ports 80 and 443). I ran the following commands on one of my EC2…
Christopher Schultz
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High ELB latency using NAT and public/private subnets

I started with a default VPC configuration for our application but it got a bit more complex recently. So basically we are using an ECS cluster with 1 EC2 instance. 1 ELB that is linked to the ECS service. We recently had to implement SQS with…
maxwell2022
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